Back to EveryPatent.com
United States Patent | 6,011,648 |
Mukai ,   et al. | January 4, 2000 |
An optical system includes a first optical element formed of a noncrystalline polyester resin having a copolymer ratio of 9,9-bis [4(2-hydroxyethoxy) phenyl]fluorene in a range of 35 molar percent to 45 molar percent when the dicarboxylic acid component is 100 molar percent, and a second optical element formed of material incorporating an ultraviolet light absorption agent and disposed at least either anteriorly or posteriorly to the first optical element.
Inventors: | Mukai; Hiromu (Kawachinagano, JP); Kohno; Tetsuo (Toyonaka, JP); Yamamoto; Yasushi (Kishiwada, JP); Inoue; Yutaka (Osaka, JP); Yamaguchi; Kyoko (Sakai, JP) |
Assignee: | Minolta Co., Ltd. (Osaka, JP) |
Appl. No.: | 079204 |
Filed: | May 15, 1998 |
May 15, 1997[JP] | 9-125179 | |
May 15, 1997[JP] | 9-125180 | |
May 15, 1997[JP] | 9-125181 | |
Oct 30, 1997[JP] | 9-298391 | |
Oct 30, 1997[JP] | 9-298392 | |
Oct 30, 1997[JP] | 9-298393 |
Current U.S. Class: | 359/431; 359/362; 359/642; 359/686 |
Intern'l Class: | G02B 023/00; G02B 015/14 |
Field of Search: | 359/362,399,355-357,404,407,421-422,431-432,614-615,642,601,686,820 525/438-444,506,533,538 528/88,99,171-194,275-295 524/537,588,604,611 396/373-386 |
5442481 | Aug., 1995 | Hasushita | 359/601. |
5581400 | Dec., 1996 | Takase et al. | 359/362. |
5675440 | Oct., 1997 | Kanamori | 359/686. |
Foreign Patent Documents | |||
6-49186 | Feb., 1994 | JP. | |
8-109249 | Apr., 1996 | JP. |
TABLE 1 ______________________________________ NON-CRYSTALLINE POLYESTER PMMA PC ______________________________________ Refractive index 1.62 1.49 1.58 Abbe No. 24 58 31 Birefringence 20 nm 20 nm 50 Light ray transmittance 90% 93% 91% ______________________________________
TABLE 2 ______________________________________ .beta. = 0.44 .about. 1.0 ______________________________________ Refrac- Sur- Radius of Axial tive Abbe Reference of face Curvature Distance Index Number Drawings ______________________________________ r1 -20.139 1.000 1.62627 24.01(OP) g1 r2 20.260 12.12.about.1.92 r3 11.362 2.800 1.49329 57.82(PMMA) g2 r4 -9.727 0.777 r5 40.000 16.000 1.58752 30.36(PC) p1 r6 .infin. 3.000 r7 17.489 23.373 1.58752 30.36(PC) p2 r8 .infin. 2.000 r9 19.205 3.000 1.49329 57.82(PMMA) se r10 -15.959 ______________________________________ Aspherical Coefficient Surface .epsilon. A4 A6 ______________________________________ r1 1.00 -6.23E-04 -2.40E-06 r2 1.00 -7.00E-04 2.80E-06 r3 1.00 -5.13E-04 1.00E-06 r9 1.00 -1.05E-04 2.00E-07 ______________________________________
TABLE 3 ______________________________________ .beta. = 0.44 .about. 1.0 ______________________________________ Refrac- Sur- Radius of Axial tive Abbe Reference of face Curvature Distance Index Number Drawings ______________________________________ r1 -19.355 1.000 1.58752 30.36(PC) g1 r2 18.569 12.12.about.1.92 r3 11.362 2.800 1.49329 57.82(PMMA) g2 r4 -9.727 0.777 r5 40.000 16.000 1.58752 30.36(PC) p1 r6 .infin. 3.000 r7 .infin. 23.745 1.62627 24.01(OP) p2 r8 646.530 2.000 r9 20.861 3.000 1.49329 57.82(PMMA) se r10 -14.630 ______________________________________ Aspherical Coefficient Surface .epsilon. A4 A6 ______________________________________ r1 1.00 -6.23E-04 -2.40E-06 r2 1.00 -7.00E-04 2.80E-06 r3 1.00 -5.13E-04 1.00E-06 r9 1.00 -1.05E-04 2.00E-07 ______________________________________
TABLE 4 ______________________________________ Refrac- Sur- Radius of Axial tive Abbe Reference of face Curvature Distance Index Number Drawings ______________________________________ 48.2 r1 10.807 3.000 1.49329 57.82(PMMA) g1 r2 -13.847 0.200 r3 11.363 1.200 1.62627 24.01(OP) g2 r4 11.18800 1.150 r5 16.1450000 4.300 1.52729 56.38(APO) g3 r6 -9.998 28.799 r7 34.892 4.250 1.49329 57.82(PMMA) se1 r8 -21.485 10.457 r9 46.228 3.800 1.49329 57.82(PMMA) se2 r10 -21.149 ______________________________________ Aspherical Coefficient Surface .epsilon. A4 A6 A8 A10 ______________________________________ r3 0.22 -2.19E-04 5.26E-06 6.73E-07 -1.02E-07 r6 0.88 1.76E-04 2.15E-06 -5.43E-09 0.00E00 r7 1.15 -2.50E-05 -4.52E-07 1.00E-09 0.00E00 r9 -140.81 6.31E-05 -4.36E-07 2.56E-10 0.00E00 ______________________________________
TABLE 5 ______________________________________ f = 31.0-36.7-48.5 F no. = 5.90-6.99-9.23 ______________________________________ Radius of Axial Refractive Abbe Curvature Distance Index Number ______________________________________ r1 .infin. d1 2.000-4.500-8.000 r2 .infin. d2 0.736 r3* -14.496 d3 5.381 N1 1.51728 .nu.1 69.43 r4* -7.345 d4 14.324-8.572-1.000 r5* -21.277 d5 6.133 N2 1.62017 .nu.2 24.01 r6* -75.383 ______________________________________ Aspherical Coefficient ______________________________________ r3* r4* .epsilon. 0.10097e+02 .epsilon. 0.10704e+01 A4 -0.32782e-03 A4 -0.45534e-04 A6 -0.36928e-05 A6 -0.26518e-05 A8 -0.16457e-06 A8 0.27099e-07 A10 0.78284e-09 A10 0.10353e-09 A12 -0.19359e-10 A12 -0.22597e-10 r5* r6* .epsilon. 0.28940e+01 .epsilon. 0.64258e+01 A4 0.89750e-04 A4 0.22461e-04 A6 -0.17712e-06 A6 0.84453e-06 A8 -0.42223e-07 A8 -0.3939e-07 A10 0.91605e-09 A10 0.59651e-09 A12 -0.18828e-12 A12 -0.31746e-11 A14 -0.31908e-13 A14 0.25005e-14 A16 -0.28518e-15 A16 0.21781e-16 ______________________________________
TABLE 6 ______________________________________ f = 36.1-46.0-58.5 F no. = 5.80-6.99-9.31 ______________________________________ Radius of Axial Refractive Abbe Curvature Distance Index Number ______________________________________ r1* -48.073 d1 7.116 N1 1.49300 .nu.1 58.34 r2* -8.067 d2 1.000 r3 .infin. d3 6. 492-3.965-2.000 r4* -17.119 d4 5.000 N2 1.62017 .nu.2 24.01 r5* -20.145 d5 3.400 r6 -6.688 d6 3.349 N3 1.67339 .nu.3 29.25 r7 -12.853 ______________________________________ Aspherical Coefficient ______________________________________ r1* r2* .epsilon. 0.10000e+01 .epsilon. 0.10000e+01 A4 -0.51911e-03 A4 0.20926e-04 A6 0.72617e-05 A6 -0.17768e-05 A8 -0.11519e-05 A8 0.32896e-06 A10 0.23222e-07 A10 -0.15209e-07 A12 -0.20128e-08 A12 -0.51511e-09 A14 0.17255e-09 A14 0.46299e-10 r3* r4* .epsilon. 0.10000e+01 .epsilon. 0.10000e+01 A4 0.17544e-03 A4 -0.10549e-03 A6 0.50044e-06 A6 0.38992e-05 A8 0.21106e-06 A8 -0.19686e-06 A10 -0.14237e-08 A10 0.19360e-08 A12 -0.13854e-09 A12 0.47541e-10 A14 0.22923e-11 A14 -0.10787e-11 A16 0.60774e-13 ______________________________________
TABLE 7 ______________________________________ f = 36.0.45.9-58.5 F no. = 5.80-6.87-9.12 ______________________________________ Radius of Axial Refractive Abbe Curvature Distance Index Number ______________________________________ r1* 16.867 d1 1.600 N1 1.62017 .nu.1 24.01 r2* 9.598 d2 3.200 r3 -120.440 N2 1.52510 .nu.2 56.38 d3 3.410 r4 -7.911 d4 1.533 r5* .infin. d5 14.798-11.379-8.700 r6* -11.896 d6 1.000 N3 1.52510 .nu.3 56.38 r7* -130.746 ______________________________________ Aspherical Coefficient ______________________________________ r3* r4* .epsilon. 0.10000e+01 .epsilon. 0.10000e+01 A4 -0.78927e-03 A4 -0.55901e-03 A6 0.11393e-05 A6 0.45074e-05 A8 -0.14705e-06 A8 0.41561e-07 A10 -0.10890e-09 A10 -0.47538e-09 A12 0.47116e-10 A12 -0.10504e-09 A14 -0.19103e-10 r5* r6* .epsilon. 0.10000e+01 .epsilon. 0.10000e+01 A4 0.47710e-03 A4 0.27870e-03 A6 -0.11552e-04 A6 -0.42449e-05 A8 0.40407e-06 A8 0.37276e-09 A10 -0.14217e-07 A10 0.20256e-09 A12 0.23489e-09 A12 0.16134e-11 A14 -0.13333e-11 A14 -0.17528e-13 ______________________________________
TABLE 8 ______________________________________ f = 36.0.45.9-78.0 F no. =4.6-5.2-5.8 ______________________________________ Radius of Axial Refractive Abbe Curvature Distance Index Number r1 49.226 d1 1.800 N1 1.67000 .nu.1 57.07 r2 13.681 d2 6.150 r3* 101.098 d3 3.450 N2 1.62017 .nu.2 24.01 r4* -229.615 d4 18.005-12.125-1.500 r5 .infin. d5 6.400-1.400-1.400 r6* 15.696 d6 6.480 N3 1.58170 .nu.3 68.75 r7* -90.361 d7 2.260 r8 -31.979 d8 5.540 N4 1.62017 .nu.4 24.01 r9 31.279 ______________________________________ Aspherical Coefficient ______________________________________ r3* r4* .epsilon. 0.10000e+01 .epsilon. 0.10000e+01 A4 -0.28488e-04 A4 -0.55290e-04 A6 -0.41908e-06 A6 -0.23229e-06 A8 0.55699e-09 A8 -0.60351e-08 A10 -0.82581e-11 A10 0.87023e-10 A12 -0.80258e-13 A12 -0.48455e-12 r6* r8* .epsilon. 0.10000e+01 .epsilon. 0.10000e+01 A4 -0.12667e-04 A4 0.11715e-03 A6 -0.19757e-06 A6 0.21783e-06 A8 0.13723e-09 A8 -0.47475e-08 A10 0.24715e-11 A10 0.28973e-10 A12 0.22403e-13 A12 -0.24019e-12 r9* .epsilon. 0.10000e+01 A4 0.16325e-03 A6 0.48451e-06 A8 0.92886e-10 A10 0.14731e-11 A12 -0.23152e-12 ______________________________________